import java.util.Scanner ;

public class Averagy 

{ 
//homework PP2.2

public static void main (String[] args) 

{

Scanner in = new Scanner(System.in);

   int First;

First = in.nextInt();

//Scanner in = new Scanner(System.in);

   int Second;

Second = in.nextInt();

  
//Scanner in = new Scanner(System.in);

   int Third;

Third = in.nextInt();

  int Averagy;



Averagy= (First+Second+Third)/3;

System.out.println ("Averary:"+ Averagy);

}
}
















